ESXi5.1 and Large Amount of Local Storage

Hi,

I have a ESXi 5.1 host with a VM acting as a file server. The host has over 4TB of local storage which is not in use. Is it possible to present this 4TB as a single volume to the file server VM? I'd simply like to
have this made available as a drive within Windows.

I've read some solutions around using RDM or creating 2TB VMDKs and configuring as a spanned drive within Windows. Are there any other options?

Thanks

Rob